Indian police have arrested three Chinese nationals on suspicion of spying on the country's eastern frontier with Nepal, news reports said Wednesday.
Senior police officer Sanjay Kakkar said the three were taken into custody after they were found taking photographs of India's border force camps in the Rupaidiah checkpoint area, the online edition of the Times of India newspaper reported.
Kakkar said the three said they were Chinese nationals and were employed as engineers in Nepal. They were not carrying any travel documents when the were apprehended late Monday on the Indian side of the border, Xinhua reported.
Border force officials said initial investigations showed the Chinese were spying and the trio were sent to national capital New Delhi after questioning, the report said.
Nepal and India share a porous border and security agencies have tightened their vigil along the frontier amid reports that the route could be used by militants to sneak into India.
Chinese Embassy officials in New Delhi declined to comment on the matter.